follevsfosseWhat's the difference?

Which to use

“folle” and “fosse” are a confusable French pair: similar on the page, but distinct in meaning, check the gloss before you choose.

#3,074
“folle” frequency rank
#7,964
“fosse” frequency rank
11038
confusion score

Side-by-Side Comparison

Feature folle fosse
Definition Filet à larges mailles, tendu lâche. Cavité dans le sol, le plus souvent artificielle.

Where the eye mixes folle and fosse

Muted = shared; highlighted = the visual trap. They share 3 letters in sequence.

5 ch
folle
5 ch
fosse

Visual trap between folle and fosse

A purely visual mix-up. folle (\fɔl\) and fosse (\fos\) are said differently, so reading them aloud is the quickest way to catch the wrong one. On the page they stay close: they share most of their letters but differ in 2 positions. Our composite confusion score for this pair is 11038, derived from the frequency rank of both members and their visual similarity.

folle is recorded at frequency rank #3,074, classified as anoun, pronounced \fɔl\. fosse is at rank #7,964, tagged as anoun, pronounced \fos\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 11038, this pair ranks #410,694 of 440,172 scored French confusable pairs - a relatively easy-to-tell-apart pair.

Orthographic DNA of folle vs fosse

Shared letters: efo. Private to "folle": l. Private to "fosse": s.

"folle" · 5 letters · shape CVCCV  ·  "fosse" · 5 letters · shape CVCCV

Known mistypes of this pair

  • folleffolle · flole · fole · folel · oflle
  • fosseffosse · fose · foses · fsose · ofsse

Frequently Asked Questions

Can "folle" and "fosse" be used interchangeably?
No. They are said differently (\fɔl\ versus \fos\) and carry different meanings; reading the sentence aloud is usually enough to catch the wrong one.
Frequency check: "folle" vs "fosse" - which ranks higher?
"folle" is the more common of the two: it sits at frequency rank #3,074 in our French list, against #7,964 for "fosse". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "folle" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "fosse" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #410,694 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "folle" and "fosse" also get mixed up with nearby pairs, the highest-scored neighbour is "fosse vs fuse". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #410,694 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list